If there's some trick to it, you simply have to teach us!

All we're doing is playing with them, aren't we?

Trick...?

E-Excuse us! How is it you're so good at looking after the Puchi-chans, do you think?

I see! Family...!

C-Can I call you "Onee-san" too, I wonder?

We're all one big, happy family♪

In a word...

...since we're kinda Onee-sans, it feels like looking after everyone, right?

While they blocked being called Onee-sans, the duo unintentionally got themselves some kouhais.